healthy looking rooster but has a tumour like bump on padding of foot what is it?

i believed i may have been ripped off by a farmer the rooster has a bump on his feet, walks normal but the bump on his foot makes him walk off balance and he also has very loose skin on his breast muscles. what kind of condition is this and at the moment he is roaming with my other flock of chickens could this sickness be passed on to them?

Bumblefoot is ordinarily caused by an injury to the sole of the foot which has developed an infection. Instead of pus, they develop a "core" of cheesy stuff inside that is the infection. I don't know about the loose skin. Weight loss, perhaps? Does he seem light or thin (sharp breast bone) for his size? Maybe he was being kept away from the food by other roosters, at least some of the time.

Sounds like bumblefoot - can you post a picture? It's not contagious like parasites or other infections. However, it IS staph and when you handle your bird to do the doctoring you should wear latex gloves. The staph is in the dirt and you can't get rid of it. Best thing is to do whatever you can to prevent it - like lowering roosts, sanding them with fine sandpaper, removing anything sharp that they may be cutting their feet on...etc.